What was the demon core made of?

The demon core was a spherical 6.2-kilogram (14 lb) subcritical mass of plutonium 89 millimetres (3.5 in) in diameter, manufactured during World War II by the United States nuclear weapon development effort, the Manhattan Project, as a fissile core for an early atomic bomb.
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What was the demon core surrounded by?

A recreation of the plutonium demon core, surrounded by tungsten carbide neutron reflector bricks. Unfortunately, Daghlian slipped and dropped a brick on top of the core, causing it to go critical. He removed the brick and stopped the reaction, but not before he'd absorbed some 200 rad of radiation.
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Why did the demon core not explode?

Why didn't the demon core incidents cause the material to explode like a nuke? It needs to be compressed a lot to explode. That's why the Fat Man bomb was a big ball of high explosives surrounding a plutonium core.
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Does the demon core still exist?

For the second and last time, the demon core was denied its detonation. While the deaths of two scientists can't be compared to the untold horrors if the demon core had been used in a third nuclear attack against Japan, it's also easy to understand why the scientists gave it the superstitious name they did.
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How did the demon core work?

When an atom undergoes fission, it usually splits into two smaller atoms, along with a few leftover neutrons that are emitted as waste. These waste neutrons can then hit nearby atoms and cause them to fission.
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The Demon Core - 14lbs of Plutonium



What is inside the demon core?

It consisted of three parts: two plutonium-gallium hemispheres and a ring, designed to keep neutron flux from "jetting" out of the joined surface between the hemispheres during implosion.
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How strong is the demon core?

The demon core was put to use for the Able detonation test of the Crossroads series at Bikini Atoll on July 1, 1946. Its yield was 23 kilotons of TNT (96 TJ), the same as the next core used in the Crossroads pair of bomb tests.
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Can you survive a nuke in the water?

If you're in the pool the pressure wave could crush you depending on strength of blast. Water can't compress, but if you're in the water you'll be crushed. So there's a two fold issue to entertain your idea, heat and pressure. Radiation will be your next concern if you survive the initial blast.
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Why is it named demon core?

As it was, fate issued those souls a reprieve, and the Los Alamos device – code-named 'Rufus' at this point – would be retained at the facility for further testing. It was during these tests that the leftover nuke, which ultimately became known as the demon core, earned that name.
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How was the demon core destroyed?

The experiments stopped. After a cooling-off period, the demon core was recast into a different weapon, eventually destroyed in a nuclear test.
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Can you hold a plutonium core?

A: Plutonium is, in fact, a metal very like uranium. If you hold it [in] your hand (and I've held tons of it my hand, a pound or two at a time), it's heavy, like lead. It's toxic, like lead or arsenic, but not much more so.
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What does plutonium look like?

Plutonium, like most metals, has a bright silvery appearance at first, much like nickel, but it oxidizes very quickly to a dull gray, although yellow and olive green are also reported. At room temperature plutonium is in its α (alpha) form.
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What did slotin say?

The sketch was used by doctors to determine the amount of radiation to which each person had been exposed. After arriving at the Los Alamos hospital Slotin told Alvin Graves: “I'm sorry I got you into this. I'm afraid I have less than a 50 per cent chance of living. I hope you have better than that.”
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Was there a third atomic bomb?

It was the second of the only two nuclear weapons ever used in warfare, the first being Little Boy, and its detonation marked the third nuclear explosion in history.
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How is plutonium made?

Plutonium is created in a reactor when uranium atoms absorb neutrons. Nearly all plutonium is man-made. Plutonium predominantly emits alpha particles – a type of radiation that is easily stopped and has a short range. It also emits neutrons, beta particles and gamma rays.
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What color is plutonium?

Plutonium is an extremely dense transuranic metal that resembles nickel when highly purified, being a shiny silvery colour, although its surface dulls rapidly due to oxidation. Sometimes, plutonium is yellow or olive green in colour.
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Where was the demon core found at?

DETONATION: The P-239 Plutonium core that killed Harry Daghlian and Louis Slotin was called the Demon Core because of its lethality to the scientists who worked on it. The Demon Core was detonated 1 July 1946 in the Pacific Ocean at Bikini Atoll as part of Operation Crossroads tests.
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Can a fridge save you from a nuke?

GEORGE LUCAS IS WRONG: You Can't Survive A Nuclear Bomb By Hiding In A Fridge.
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What does a nuke smell like?

Other bombs smell like the materials which cause the explosion, e.g., napalm smells like gasoline and tnt smells like gun powder.
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What happens if you nuke the ocean?

Unless it breaks the water surface while still a hot gas bubble, an underwater nuclear explosion leaves no trace at the surface but hot, radioactive water rising from below. This is always the case with explosions deeper than about 2,000 ft (610 m).
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What isotope was the demon core?

The demon core, that 14-pound lump of plutonium that claimed the life of Louis Slotin, began its existence as rods of uranium-238, a relatively stable isotope, at the Hanford Site in Washington State.
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What is the most radioactive thing on earth?

The Most Radioactive Places on Earth
  • Uranium: 4.5 billion years.
  • Plutonium 239: 24,300 years.
  • Plutonium 238: 87.7 years.
  • Cesium 137: 30.2 years.
  • Strontium-90: 28-years.
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How much plutonium is in a nuke?

Nuclear weapons typically contain 93 percent or more plutonium-239, less than 7 percent plutonium-240, and very small quantities of other plutonium isotopes.
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Where is plutonium Found?

Plutonium generally isn't found in nature. Trace elements of plutonium are found in naturally occurring uranium ores. Here, it is formed in a way similar to neptunium: by irradiation of natural uranium with neutrons followed by beta decay. Primarily, however, plutonium is a byproduct of the nuclear power industry.
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